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No. 625,360. I Patented May 23, I899.

A. R. SHATTUGK.

VALVE.

(No Model) (Apphcatxon filed June 9, 189B.)

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ALBERT R. SHATTUCK, OF NEW YORK, N. Y.

VALVE.

SPECIFICATION forming part of Letters Patent No. 625,360, dated May 23, 1899. Application filed June 9, 1898- Serial No. 682,991. (N0 model.)

To (all whom it may concern:

Be it known that l, ALBERT R. SHATTUOK, of the city, county, and State of New York, have invented a new and useful Improvement in Valves, of which the following is a specification.

My invention relates to a puppet-valve, and more particularly to means for regulating the extent of movement of said valve from its seat.

My invention consists in a puppet-valve having a stem which passes through a cylindrical threaded portion of the valve-case and is also encircled by a spring,by means of which the valve is held to its seat. Surrounding said cylindrical threaded portion of the case is a threaded sleeve or nut, which on being rotated is raised or lowered, as the case may be, tovary the distance between its upper edge and a washer or projection on said valvestern. In this way the throw or lift of the valve is regulated with accuracy.

In the accompanying drawings, Figure l is a vertical section of my invention. Fig. 2 is a detail view showing the exterior of the threaded cylindrical portion of the valve-case.

A is the valve case or chamber, provided with a seat 13 and with inlet and outlet openings O and D for the fluid the flow of which the valve is to control. The openings (J and D may be threaded, as shown, to receive pipes.

E is the valve,which rests against the seat B.

F is the valve-stem, which passes through an opening in the upper wall of the chamber A and also through a cylindrical projection G on said chamber. Within the cylindrical projection G the valve-stem is surrounded by a spiral spring H, which at its lower end bears against the-bottom of the opening in the cylinder G and at its upper end against a washer I on the stem. The pressure of the spring H on the washer I is met by a nut J, which is placed on the upper threaded portion of the stem F and secured by the jam-nut K.

The expansion of the spring H normally holds the valve E to'its seat B, and the pressure of this spring can be regulated by turning the nut J.

On the exterior of the cylinder G is formed a screw-thread L, and surrounding the cylinder G and receiving this screw-thread on its inner periphery is a sleeve M, which may be rotated by the handle N. The effect of rotating the sleeve M is either to raise or lower it, in accordance with the direction in which it is turned, and thus to increase or diminish the extent of downward movement of the washer I, and hence the extent of opening of the valve E.

By reason of the aforesaid construction the sleeve M can be raised or lowered over very small distances, and therefore the extent of opening of the valve can be regulated with the utmost nicety,and as this adjustment of sleeve can be instantly made the valve-opening can be varied to suit changing conditions in very brief periods of time. Where it is desired that the valve-opening shall be uniformly varied over certain periods of time or shall be varied in a certain way within a given time period, any suitable mechanism for effecting this result may be attached directly to the sleeve M and caused to rotate the same in the desired manner.

In order to reduce the shock of contact between the washer I and the upper edge of the sleeve M, the washer may be made of any elastic or resilient material, or, if desired, yielding gaskets of any suitable form may be interposed between the sleeve and washer.

It will of course be understood that I may apply any suitable device to the handle N or to the sleeve M for looking or retaining said sleeve inplace after it has been adjusted, as may be desired.

I claim 1. The combination with a valve having a stem, a projection on said stem, and a spring surrounding said stem interposed between said projection and a fixed support and holding said valve to its seat, of a longitudinal adj ustable sleeve surrounding said stem and interposed between said support and said projection, substantially as described.

2. The combination with a valve having a stem, a projection on said stem, a spring surrounding said stem interposed between said projection and a support and holding said valve to its seat and means for adjusting said spring, of a longitudinal adjustable sleeve surrounding said stem and interposed between said support and said projection substantially as described.

3. The combination with a valve-casin g having a hollow cylindrical portion threaded on its periphery, of a valve seated in said casing and having a stern passing through said cylinder, a project-ion on said stern, a spring Within said cylinder and interposed between 5 the bottom thereof and said projection on said stem, and a rotatable threaded sleeve surrounding said cylinder, substantially as described.

4. The combination of the valve-casing A,

10 valve E, stem F, threaded cylinder G, Washer I, springH within said cylinder surrounding said stem and interposed between the bottom of said cylinder and said Washer, and threaded sleeve M on said cylinder, substantially as described.

ALBERT R. SI-IATTUOK. 

